(WASHINGTON, D.C.) — A dry cough and fever are commonly associated with COVID-19, but there are side effects Doctor Anthony Fauci said the public should know.

After the virus runs its course, Fauci — who is the director of the National Institute of Allergy and Infectious Diseases — says a “disturbing number” of cases have shown heart inflammation.  However, the doctor says that heart inflammation has been found in asymptomatic carriers.

“When they have sensitive imaging technologies such as magnetic resonance imaging or MRI [they’re found to] have inflammation of the heart,” said Fauci.  

In addition, those who have recovered from COVID-19 may also experience “cognitive abnormalities,” such as struggling to concentrate.

Fauci says it should be expected that ongoing research of the virus will discover new symptoms and side effects because of how new the novel coronavirus is.  While the flu has been heavily researched for decades, COVID-19 is not a year old.

“These are the kinds of things that tell us we must be humbled that we do not completely understand the nature of this illness,” he said.

In addition to Fauci’s remarks, Centers for Disease Control and Prevention Director Robert Redfield cautioned that young people are slowly making up more and more of the overall number of cases.  As of Wednesday, people between the ages of 18 to 25 make up 26 percent of all new infections.

COVID-19 has infected nearly seven million Americans and killed close to 202,000, according to data from Johns Hopkins University.